The cast of David O. Russell's con-man tale took home SAG's cast award Saturday night, nudging "American Hustle" ahead of Oscar season's months-long front-runner, "12 Years a Slave," in what is proving to be a tight race.

The SAG category of cast in a motion picture is often seen as a reliable predictor for the Academy Award best picture prize because many SAG members are part of the actors branch of the Academy of Motion Picture Arts and Sciences, the largest voting bloc in the organization.

It's perhaps not surprising that the actors' union rewarded a movie with a large cast of A-listers delivering their winningest screwball performances. A drama set in the 1970s and early '80s, "American Hustle" stars Christian Bale and Amy Adams as con artists forced by an FBI agent (Bradley Cooper) to participate in an elaborate sting to catch corrupt politicians. Jennifer Lawrence plays Bale's character's unpredictable wife.

"David O. Russell makes you feel like part of a family," Cooper said, accepting "American Hustle's" award on stage at the Shrine Exposition Center in Los Angeles. "He's an actor's director."

In the individual film acting categories, SAG largely rewarded this Oscar season's favorites.

Matthew McConaughey, who already won a Golden Globe and Critics Choice Award in the past week, won the lead actor prize for his performance as homophobic but ultimately pioneering AIDS patient Ron Woodroof in the drama "Dallas Buyers Club."

Accepting the award, McConaughey gave a passionate if somewhat rambling speech in which he mentioned Neptune, bull rides and playing characters who are, "feverishly drunk on their obsessions."

"I've been having fun with the circus," McConaughey told reporters backstage, explaining his loopy behavior. "If I wasn't having fun, take me behind the woodshed and straighten me out."

Lead female actor winner Cate Blanchett kind of did. When a teleprompter warned her she was running out of time just seconds into her acceptance speech for her performance in "Blue Jasmine," Blanchett said, "Matthew McConaughey spoke about Neptune. I think I can have five seconds."

Lupita Nyong'o took home her first SAG Award on Saturday, after winning a supporting trophy for her performance as a brutally abused slave in "12 Years a Slave." In her speech, Nyong'o thanked Solomon Northup, whose 19th century memoir inspired the film.

"Thank you for taking a flashlight and shining it underneath the floorboards of this nation and reminding us what we stand on," Nyong'o said.

Jared Leto also spoke on a serious note after winning the supporting actor prize for "Dallas Buyers Club," in which he plays Rayon, a transgender woman with AIDS.

"I'd like to dedicate this special honor to people who have lost their lives to this dreadful disease ... the Rayons of the world," he said.

The guild gave its Life Achievement Award to Rita Moreno, the Puerto Rico-born actress, dancer and singer best known for playing the role of Anita in "West Side Story." At 82, Moreno made one of the more vital appearances of the evening, dropping an F-bomb and singing "This is All I Ask" in a leg-baring dress.

Meanwhile, "Breaking Bad" may have ended its TV run last fall, but it's still pulling in the trophies. The AMC drama about a ruthless meth kingpin earned the top honor for a television drama series. "What a way to go out in style," Bryan Cranston said as he accepted the ensemble award. Moments earlier, he had topped off his Emmy and Golden Globe wins for playing Walter White, the high school chemistry teacher gone bad, with the prize for actor in a TV drama series.

The actor was in high spirits, acknowledging show creator Vince Gilligan with an "I love you, honey" and even breaking out into song, a joking nod to Life Achievement honoree Rita Moreno, who moments earlier sang through much of her speech.

Douglas' daring turn as the flamboyant gay showman Liberace in HBO's "Behind the Candelabra" has been a revelation. It had already earned him the Emmy and the Golden Globe and on Saturday the SAG Award for performance by an actor in a television movie or miniseries. The actor had nothing but praise for his costar, who played the pianist's much younger lover. "The truth is, I am not here without Matt Damon," Douglas said. "This is yours too."

Mirren won the trophy for female actor in a television movie or miniseries for HBO's "Phil Spector," also giving a gracious shout-out to her costar, Al Pacino, who played the troubled record producer. Smith, who wasn't present, won the statuette for female actor in a drama series for PBS' "Downton Abbey."

On the comedy side, "Modern Family" won its fourth consecutive honor for top comedy series. And costar Ty Burrell took the comedy actor award, giving one of the funniest speeches of the evening, including his five simple rules for failing his way to success. Louis-Dreyfus won for female actor in a TV comedy role for HBO's "Veep" and had the audience laughing with a riff on her role as the ambitious and demanding vice president.

Backstage, when the "Modern Family" cast hit the press room, there was an awkward moment when a reporter asked, "What did you learn from your mothers about beauty?"

Winter, 15, is estranged from her mother and in the midst of a nasty public spat, with the teen accusing her mother of calling her fat and depriving her of food. When pushed toward the microphone, Winter backed away.

After a week stuffed with awards shows, everyone in Hollywood seems to be getting punchy, a fact Louis-Dreyfus acknowledged in picking up her trophy. "It's awards season and things get confusing."